Roofing mastic



Patented Apr. 25, 1 9 3 3 UNITEDSTATES FACTURING COMPANY, A CORPORATION oF'o'rrIo, 1 a Q RooriNG M me a N0 Drawing.

This invention relates to a mastic substance tobe used in weatherproofing or connection, it is not the purpose to limit the subjoined claims to "roofing, unless the context expressly so states. w r

The new mastic substance may be packed in bulk or furnished on the fabric as avehiole; or the vehicle may be saturated with the mastic substance.

It has been customary to use roofing cements for various repair purposes; also for coating jobs, but these haye usually dried out rapidly. It is the purpose, in thel'present invention,,to adapt the mastic'sub'stan'ce inits various forms,gto all such purposes.

It is particularly adapted for use upon saturated felts for seaming purposes, where it can be applied between sheetsor other members of roofing material, also in various consistencies,as a coating on said sheets. I

The invention'has for its objectto provide a bituminous or asphaltic cement containing "ingredients through means of whichto determine, at will,the degree offiuidity, plasticity, and adhesiveness, as'well as the duration of the quality of adhesiveness of the mastio substance; so that the substance, or

goods treated therewith,maybe conditioned to meet varying requirements in roofing op- 'erations prior to the arrival ofthe goods on' the job in other words, to permit shipping the roofing goods or pro'ductin such a state that even after having remainediin the warehouse through varyingtemperatures, it will 7 remain in commercially satisfactory condition until it reaches the final consumer, and particularly the condition of self-adhesive- ,ness &c., as set forth co-pending applications'filed'by me, towit: Serial 'No. 386,713,

filed November '8, 1919 and Seria'l No; 365,-

901., filed March 15, 1920, the latter of which I 7 Application filed June l, 920. Serial myssaeos;

ALBERT o. FISCHER, or "CHICAGO, rnnmorsiassrenoa Torrie PHIL 1 r canary mun;

issued on July 13, 1926 into Patent No. i. v

1,592,760Q1 According to these applications,

the mastic substance applied at they place of n manufacture to the seaming areasf'of roofing materials, or as a coating to roofing mate? rials','has the inherent quality of maintaining its condition during thetiine which may reasonably elapse between manufacture of the goods and 'theirapplica'tion to the building structure, and which inherent condition involves any one of the features of lasting adhesiveness, retention of plasticity .in 'a- :mass of sufiicient volume1to'affordan effem tive packing or filler for spaces between roofing members and like purposesyor retention of? mass between ribs or beads 'which serveas confining walls for the'adhesiVe or plastic mastic, and also serve as means for interlocking overlapped sheets to resist separation'in the plane of the sheet.

Where surfaceadhesiveness alone is desired'for only a limited period oftime, as- V phaltic or bituminous bases or bodies can be used in their prepared or original state, particularly when a layer required is thin adapted by itsinherent conditions to'meet the varying conditionsfand temperatures in.-

enough to avoid running under temperatures that'must be encountered before the goods "are applied (upon; the roof, or otherwise cident to the particular *channel through which it is marketed, and field in'which it is 'to be employed, fsothat it may reach the ultimate consumer in a state-ready for ap plication in a practical 3 manner. But this condition of lasting adhesiveness or retarded drying can be insured 'by'the additionof non-drying oils, of'vegetable or otheryar'ieties and as an eXa-mpleicotton seed oil,"ca"stor oil, or creosote oil and other numerous varieties. Some oi these 'non drying oils do not interfere with the adhesiveness, while other nondrying oils destroy the adhesive ness more or less,andj'simp'lymaintain 'p-las ticity' and keep the plastic ass in de-' A, sirable condition' forfjoint" packing-pur poses, so that it will conforni' to' irr egularia ties between overlap ing sheets i where is],

heavierijbodyuofmastic is required? Where i r it is to employ a mastic body that" will develop a plastic packing between two 1 age, orin the use for which it is intended- Such a-mastic,'which1s cheaper toproduce the labor required in applying it is pere running or flowing-under any temperature, to which themasticg or the material on:

which it is placed, may be subjected in storin its several combinations by reason of the ingredients used, is more economical to use by reason of the elimination of labor, since i I formed bymachinery where formerly itwas performed by hand.

Any subdivided give the base. of the masticproper body and heat insulating quality, such as mineral ".wool, fullers earth, whiting, Celite, clay,

- tarder, by holding the basic bituminous or asphaltic substance in suspens1on, and

, tanglefoot.

linters (being the lint recovered by abrasion of cotton seed after ginning), or asbestos fiber, which have either the property of absorbing the oil and holding it in suspension,

or the property of interfering with the flow by reason of their fiber. Any of these substances will act as an insulator and flow rethrough' meansof'them any desired flow point or melting point and bulk can be im- I parted by selecting the base used and the proportion of filler added. This filler also, in the case of the fiber, linters, etc.,acts as a holding medium against the force of gravity, when the cement is used between cracks and for coating purposes. It further acts as a bulk filler, which upon being placed between overlapping sheets, conforms.to the spaces and irregularitiesuwhich otherwise might allow the infiltration of water or other liquid or substances to be excluded.

Where it is desired to lend to thebituminous or asphaltic material a gummy characteristic so 'that it can with advantage be placed between the surfaces of two overlapping roofing members and leave them free to be pulled apart, the asphaltic or bituminous base is combined with rosin, gum, non-drying oils, and boiled linseed oil, or a compound allied in physical.characteristics tothe commercial article known as tree This will also have the effect of; retarding the drying or prolonging, the stickiness of the mastic, and will cause it to break apart when the roofing members or parts of a roofing member are separated, in-

stead of drawing out into a stringy condition. a The addition .ofthese ingredients or this substance to bituminous basesor mastic tion of thevola'tile oils and continues the filler be employedto described herein.

' properties ofsuch quick drying mastic for a prolonged period.

Where a packing is desired withoutgreat stickiness but mainly with. plasticity which will adapt it to enter between overlapped roofing members, into cracks,or over porous,

surfaces, the same baseis used with anondrying oilwhich destroys the stickiness but maintains the. masticquality and then any one or vmoreof the .fillers hereinbefore described are added to give bulk to the mass and raise its flowing point.

- Where a jelly-like cushion is desired, the

basic asphaltic or bituminous material has added to ita combination ofglueand glycerine, or a combination of .gelatine and glycerine, or such other substance as produces a like effect, 'which'sets the sameas .gelatine and keeps the-mastic in-asticky, nondrying state, yet presentsa tough stiif/ body.g;lf

desired,-any one or more 0n1efi11ingmate- 1 rials maybe added tothis mixture-to-in I I creaseits mass and control its consistency.

Similarly, the. volatile quick-drying mastic 9 0 7 I may be retarded in others of the compoundshereindescribed by mixing therewith zthis jelly-like substance whichseives as a solvent toretain the adhesive character of the iSPQClfied gummy substances used in conjunction with the bituminous material.

Any ofthe mixturesherein described may I be combined to obtain varying characteristics inthe resultant mastic body, and thesubstance thus rendered suitable forthe;

various uses describedin my copending applications referred to, orfor other commercial purposesto which: they may be put, whether in connectionwith the art of roofing or covering surfaces with sheet niate-- rials, or any other art wherein it. may be desired to produce effects similar to those A body of material may be obtained with more than one of the substances herein material may first be saturated with the basic material, or with, anyone of the c onibinations. herein mentioned, while in; a heated state, or even cold. When saturated with the substance ina heated state, the substance will besuch thatlit will develop the conditions desired by cooling. Again, the

material provided with anyone of the herein described compounds which dry whenset, may thereafter, be treated. with a surface coating of a sticky masticpor with a solvent of such character as will restore the mass toits originalsticky state so as to cause it to adhereto a contacting surface while still maintaining cushioning efiectas one of its nhe nt ual tie i H a A strip of felt, or fabric of fiber or fibrous substance adapted to be located in contact with two overlapping sheets, may be prepared for such use by applying to it one of the herein described compounds which dry when set, and of such a nature that it is I merely necessary to immerse or coat the sur face of the materialin a suitable solvent to adapt it to assume an adhesive characteristic that will enable it to serve its intended V purpose.

According to one use of the invention herein described, a mastic of lastin adhesiveness will be applied to the surfaces of two overlapping members, or on a surface adapted to lie between two overlapping members or filled with fibrous material or filler, and these will be placed together so as to confine and preserve the mastic be tween them until reaching the place of use,

when they will be pulled asunder to expose upon each a self adhering surface.

A plastic mass according to some of the formulas herein described is well adapted for use in the protection of vegetation against insect life, by putting the cement in-. to cracks of or in circles about the plants or trees which it is desired to protect. The added asphaltic base makes it more waterproof and the stickiness'is more I claim:

1. A waterproof mastic comprising a bifuminous body, gummy substances in said prolonged. 

